Selective application valve for automatic train-control apparatus



Feb. 12 1924.

' A. J. BROOKINS SELECTIVE'APPLICATION VALVE FOR AUTOMATIC TRAIN CONTROL APPARATUS File d Sent. 11 1922 Shets-Sheet 1 AND/FE 15mm Feb. 12 1924. 1,483,276

A. J. BROOKINS I SELECTIVE APPLICATION VALVE FOR AUTOMATIC TRAIN CONTROL APPARATUS Filed Sent. 11. 1922 2 Sheets-Sheet 2 l w u r R v a Y Y 1 F IG. 2

i AA/MLW dEMJ/(M/S' Patented Feb. 12, 1924.

ANDREW J. BBOOKINS, OF CHICAGO, ILLINOIS.

SELECTIVE APPLICATION VALVE FOR AUTOMATIC TRAIN-CONTROL APPARATUS- Application filed September 11, 1922. Serial No. 587,436. 7

To all whom it may concern:

Be it known that 1, ANDREW J. BROOKINS, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Selective Application Valve for Automatic Train-Control Apparatus, of which the following,

when taken in connection with the drawings accompanying and forming a part hereof, is a specification.

This invention relates to a valve arranged or register with the operation of the automatic train control apparatus in the giving of a caution signal, a danger signal, or in the application of brakes. Additional objects are to obtain an apparatus of the kind named which is simple in construction, having few parts, easily installed, effective in operation, economically made, and not liable to break or get out of order.

In the drawings referred to Fig. 1' is a side elevation of a portion of, a locomotive, showing in side elevation a storage tank, an apparatus embodying this invention and associated pipes, and signals, and in diagram an automatic train control apparatus.

Fig. 2 is a vertical section of an apparatus embodying the invention.

A reference character applied to designate a given part indicates said part throughout the several figures of the drawings wherever the same appears.

A represents a portion of a locomotive. B represents a storage tank mounted on the locomotive, into which tank air is forced by mechanism not illustrated and not forming an element in this invention, the air from said tank designed for use in the air brake system of the train. C represents a selective application valve embodying this invention. D, (Fig. 2), represents an inlet port toapparatus C. E represents a conduitor pipe communicatin at one end, with stora 'e tank B and,at the other end,with port D. (Fig. 2), represents an outlet port. to apparatus C,

chamber M.

and G a conduit or pipe communicating, at one end, with outletport F and, at the other end, with the engineers valve I represents the train pipe. J represents a' train control apparatus, with which the apparatus embodying this invention is designed to be used. represents a pipe communicating with train pipe I and with the train control apparatus J. K, (Fig. 2), represents a vertically movable valve member in apparatus C, Z0 represents the seat of valve member K. Valve member K is provided with chamber L, and port Z from said chamber. M represents a chamber in the shell or casing of the apparatus C, said chamber positioned between the end of valve member K and said shell or casing, and m represents an aperture forming an outlet from said The lower end of valve member K is of greater external circumference than is the upper end thereof, and the cylindrical shell of the apparatus in which the valve member is longitudinally movableis so arranged that when said Valve member is seated on seat is, an annular chamber (N) I is obtained, which extends around said valve member, and with which annular chamber the inlet port D and the outlet port F are incommunication. 0 represents a gland of the stufling box designed to prevent leakage of air from annular chamber N, and P represents an air retaining ring on valve member K, which is positioned below the port F when'the valve member is seated, and is arranged so that when the valve member is raised from its seat to cut off communication between ports D and F it will be positioned above said port F, to prevent leakage of air from said port D to and through port F, by way of the annular chamber N. Q represents a chamber with which chamber L of valve member K is, at all times, in communication. It represents an additional chamber in the shell or case of apparatus C. 1" represents a longitudinally movable valve in chamber R. S represents a spring arranged to yieldingly maintain valve 1' in normal position as illustrated in Fig. 2.. T represents an annular chamber around valve 1', and t represents a passage way communicating with chamber Q and with annular chamber T. U represents a communication with annular champort in ber T when valve r 1s 111 normal position,

and n represents a port arranged to be in no ,tion, and Y represents .a, conduit or pipe vfrom port U to said signal. X represents a signal which is designed to beactuated',

when train control apparatus J registers danger. Y represents a con duitorp1pe= from port a (Fig, 1), to signal z represents a rod which issecured orrthevalve member 1, to be moved longitudinally: by the movement of said valve inembera Z represents a hinged plate which constitutes a visu'al signal, which isnormally im an inclined plane, and not exposed to Vl8W.' to a person in th'e cab ofthelocomotiven Rod Z isattached to plate Z so that as; said rod is moved valve member r it; turns plate Z on its hinge. (Z ,intoa sub stantially vertical plane), at ,which time 1t): can; be observed under-neatlrthe shell or case: of the apparatus by a person in the cab.

' When valve member Kisin normal position, resting on seat 70, any leakage fromthe annular chamberN is prevented, from flowingintochamber Q.

The apparatus embodying this, invention. beinginstalled substantially illustrated mi Figg l, and the parts theree ii in normal pos tion, as illustratedin l i g'. 2. air under pressure may flow from-storage tank B through conduit or pipe E, port- I), annular chamber- N, port F, conduit or pipe G, eng neers: va ve H, into train pipe I. 7

Assuming the train control apparatus J to function, to register 'cautionfl air under train pipe pressure will flow through said traincontrol apparatus; through conduit orpipe V and inlet into chamber Q of theapparatus embodying the invention, and into chamber L of valve member K, and will therebymove said valVe member from.

. .its normal positionon seat ligand put aperture Z in communication withchamber M, and air under pressure will flow through said aperture into .said chamber and through aperture m to waste. By the above named movement of valve member K, port F i "is cutout from communication with annular chamber N. At the same timeuair, under pressure also flows from chamber Q through .ap'erturet into and through annular chamber T, throughport U, conduit orpipipe to. and through signal sounding said signals Assuming said control apparatus J to be actuated to register danger, and air under train pipe pressure to flow through conduits or pipes V and Said air will move the valve member K, as last above set forth, for caution opening aperture Z into chamber M, and closing port F, and at the same time air underpressure will flow through the conduit or pipe and inlet V into chamber R and willtorce valve member 1 longitudinally to put annular chamber T in communication with port a, cutting out communication between said annular chamber'and port U, and air will flow from said chamber Q, through aperture t, annular chamber T, port a, conduit or pipe Y to and through signal X sounding said signal, it-being the danger signal. At the same time the rod Z will be moved longitudinally and turn visual signal Z to expose it to View underneath the shell or case of the apparatus to a person in the cab of the'loco- :motive.

I claim:

1. casing provided with a chamber in communication with the air supply of a train, means to direct air under pressure to said chamber, in combination with an ad-- ditional chamber in said casing, a movably :mounted member oi two diameters in said first chamber, said part of smaller diameter extending through said first chamber, and a seat in said first chamber arranged to coact with said movable member to cut ofi communication between said chambers.

2. A chamber provided with a plurality of ports, one of said ports in communication with the supply of air under pressure to the air brake system of the train on which said chamber is installed, in combination with a movably mounted member in said chamber. said movable member arran ed to control communication between said ports, and a seat in said first chamber arranged to coact with said movable member, all arranged so that the pressure of air in said chamber yieldingly forces said movable member to said seat.

Achamber having a plurality of ports, one of said ports in continuous communication with the supply of air under pressure to the train pipe of an air brake system, to continuously supply air under pressure to said chamber, in combination with a movably mounted member in said chamber arranged to control communication between said ports,an annularinternal flange to the Wall of said chamber arranged to form a seat for said movable member and said air under pressure insaid chamber arranged to yieldingly force said movable member to said seat, and an additional chamber arranged to have air under pressure discharged thereinto'. trom the train pipe, and said chamber in determined relation to said movable member so that air under pressure therein moves said movable member in a de termined direction, to cut oil communication between said ports.

4. A chamber having an inlet port in continuous communication with the storage tank of an air brake system, and having an outlet port, a movably mounted valve member in. said chamber, said valve member also provided with a chamber and a port to said chamber, and said valve member arranged to control communication between said inlet and outlet ports, a seat for said movable member, means, comprising air under pressure in said firstchamber to yieldingly force said valve member to said seat, in combination with an additional chamber in communication with said chamber in said valve member whereby air under pressure in said additional chamber moves said valve member in a determined direction against the continuous pressure of air in said first named chamber, said port to the chamber in said valve member arranged to establish communication between said chamber and the atmosphere when said valve member is moved a determined distance in said determined direction.

5. A. casing provided with a chamber, an inlet port and an outlet port to said chamber, and an additional chamber within said casing, in combination with a movably mounted valve member in said first chamber and a chamber within said valve member communieating with said additional chamber, and said chamber in said valve member provided with a port arranged to control communication between said chamber and the atmosphere, and means to establish communication between said additional chamber and the atmosphere through signals, and signals.

6. A chamber having a plurality of ports, one of said ports in communication with the storage tank of an air brake system, a movably mounted valve member in said chamber, also provided with a chamber having an outlet, said valve member arranged to control communication between said ports, an annular fiange to the wall of said first chamber arranged to form a seat for said valve member, said movable valve member arranged to co-act with air under pressure in said first chamber to be yieldingly forced to said seat, in combination with an additional chamber, an inlet to Said additional chamber, said movable valve member arranged to coact with air under pressure in said additional chamber to be moved in a determined direction.

7. A casing provided with a chamber having inlet and outlet ports and provided with additional chambers, all said chambers in communication, in combination with a movable valve member in said first chamber arranged to control communication between said ports, said valve member arranged when in normal position to obtain communication between said ports, an inlet to one of said additional chambers and a plurality of outlets to the other one of said additional chambers, said chambers arranged so that air under pressure in said additional chambers co-acts with said valve member to move the same in a determined direction to cut out communication between said outlet port and said first chamber, signals, and selective mechanism in one of said additional chambers to control the outlet thereof in communication with a corresponding signal.

8. A plurality of chambers provided with a communicating passage way, and each of said chambers provided with an inlet for air under train pipe pressure a plurality of outlets from one of said chambers, signals and pipes communicating with said outlets and signals, respectively, a movable member in said chamber which is provided with outlets, arranged, when in normal position, to establish communication with said passage way and one of said signals, means to yieldingly hold said movable member in said normal position, said movable member arranged to be actuated by air under train pipe pressure to cut out said normally communieating outlet and to establish communication between said passage way and the remaining outlet.

9. A chamber provided with an inlet, in combination with a movable member in said chamber, means to yieldingly hold said member in normal posit-ion, said member arranged to be moved by air under pressure flowing through said inlet, a visual signal movably mounted outside said chamber, and a connection between said signal and said movable member, whereby theposition of said signal is controlled by the position ofsaid movable member.

10. A chamber provided with a plurality of inlets and a plurality of outlets, in combination with a movable member in said chamber, means to yieldingly hold said member in normal position, said member arranged to permit air to flow through an annular chamber thereon from one of said inlets to one of said outlets and to be moved by air under pressure flowing into said chamber through the other of said inlets to selectively control the one of said outlets in communication with said annular chamber, a visual signal movably mounted outside said chamber, and a connection between said visual signal and said movable member, whereby the position of said signal is controlled by the position of said movable member.

ANDREW J. BROOKINS,

Witnesses:

CHARLES TURNER Baown,

B. 8. BROWN, 

